You ll find all the answers in AMM 22. In a nutshell, small amount of thrust will be added / removed to reach (interpolation) within 125 seconds selected FL. Help from elevator command will be mixed to thrust command to achieve this. Of course when target cannot be reached within 125 seconds we're either HOLD or THR and back to speed on elevator mode.
Last edited by bauduin_alex; 21st Aug 2009 at 04:05.